Gérald Michel, Manager (Growth & Performance) of LafargeHolcim, Lyon in France along with Rajesh Surana, CEO of LafargeHolcim Bangladesh limited (LHBL), poses for a photo graph after a seminar on ‘High Performance Concrete’ at a hotel in the city on Tuesday. Asif Bhuiyan, Chief Corporate Affairs Officer of the company and more than 150 engineers from different government and non-government organizations attended the seminar.